4 reasons the stock market is tanking

Stock markets did not have a good day on Tuesday. The Dow Jones, the S&P 500, and the Nasdaq all dropped around a percentage point. Granted, the market close wasn't as bad as the open, when stocks plunged over 500 points. But still, the day was the latest descent in a slide that's been going on for weeks. The Dow is down almost six percentage points and is headed for its worst month since August 2015; the S&P 500 is on track for its fifth straight week of declines; and all three indexes hit...